1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __BPF_MISC_H__ 3 #define __BPF_MISC_H__ 4 5 /* This set of attributes controls behavior of the 6 * test_loader.c:test_loader__run_subtests(). 7 * 8 * __msg Message expected to be found in the verifier log. 9 * Multiple __msg attributes could be specified. 10 * 11 * __success Expect program load success in privileged mode. 12 * 13 * __failure Expect program load failure in privileged mode. 14 * 15 * __log_level Log level to use for the program, numeric value expected. 16 * 17 * __flag Adds one flag use for the program, the following values are valid: 18 * - BPF_F_STRICT_ALIGNMENT; 19 * - BPF_F_TEST_RND_HI32; 20 * - BPF_F_TEST_STATE_FREQ; 21 * - BPF_F_SLEEPABLE; 22 * - BPF_F_XDP_HAS_FRAGS; 23 * - A numeric value. 24 * Multiple __flag attributes could be specified, the final flags 25 * value is derived by applying binary "or" to all specified values. 26 */ 27 #define __msg(msg) __attribute__((btf_decl_tag("comment:test_expect_msg=" msg))) 28 #define __failure __attribute__((btf_decl_tag("comment:test_expect_failure"))) 29 #define __success __attribute__((btf_decl_tag("comment:test_expect_success"))) 30 #define __log_level(lvl) __attribute__((btf_decl_tag("comment:test_log_level="#lvl))) 31 #define __flag(flag) __attribute__((btf_decl_tag("comment:test_prog_flags="#flag))) 32 33 /* Convenience macro for use with 'asm volatile' blocks */ 34 #define __naked __attribute__((naked)) 35 #define __clobber_all "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "memory" 36 #define __clobber_common "r0", "r1", "r2", "r3", "r4", "r5", "memory" 37 #define __imm(name) [name]"i"(name) 38 #define __imm_addr(name) [name]"i"(&name) 39 40 #if defined(__TARGET_ARCH_x86) 41 #define SYSCALL_WRAPPER 1 42 #define SYS_PREFIX "__x64_" 43 #elif defined(__TARGET_ARCH_s390) 44 #define SYSCALL_WRAPPER 1 45 #define SYS_PREFIX "__s390x_" 46 #elif defined(__TARGET_ARCH_arm64) 47 #define SYSCALL_WRAPPER 1 48 #define SYS_PREFIX "__arm64_" 49 #else 50 #define SYSCALL_WRAPPER 0 51 #define SYS_PREFIX "__se_" 52 #endif 53 54 /* How many arguments are passed to function in register */ 55 #if defined(__TARGET_ARCH_x86) || defined(__x86_64__) 56 #define FUNC_REG_ARG_CNT 6 57 #elif defined(__i386__) 58 #define FUNC_REG_ARG_CNT 3 59 #elif defined(__TARGET_ARCH_s390) || defined(__s390x__) 60 #define FUNC_REG_ARG_CNT 5 61 #elif defined(__TARGET_ARCH_arm) || defined(__arm__) 62 #define FUNC_REG_ARG_CNT 4 63 #elif defined(__TARGET_ARCH_arm64) || defined(__aarch64__) 64 #define FUNC_REG_ARG_CNT 8 65 #elif defined(__TARGET_ARCH_mips) || defined(__mips__) 66 #define FUNC_REG_ARG_CNT 8 67 #elif defined(__TARGET_ARCH_powerpc) || defined(__powerpc__) || defined(__powerpc64__) 68 #define FUNC_REG_ARG_CNT 8 69 #elif defined(__TARGET_ARCH_sparc) || defined(__sparc__) 70 #define FUNC_REG_ARG_CNT 6 71 #elif defined(__TARGET_ARCH_riscv) || defined(__riscv__) 72 #define FUNC_REG_ARG_CNT 8 73 #else 74 /* default to 5 for others */ 75 #define FUNC_REG_ARG_CNT 5 76 #endif 77 78 79 #endif 80